【正文】
II, ERP ? Material Requirement Planning (MRP) ? MRP is a planning tool geared specifically to assembly operations. The aim is to allow each manufacturing unit to tell its supplier what parts it requires and when it requires them. ? How MRP works? ? analysis of demands leads to creation of a master production schedule (MPS) of finished products to fulfill customer’ s orders ? The next step is to generate a material requirements with the data of MPS, BOM (bill of materials) and existing inventory Material Requirements Planning Master Production Schedule Bill of Materials Existing Inventory Scheduled Receipts Gross Inventory Requirements Net Inventory Requirements Inventory to Order Manufacturing Resource Planning (MRP II) ? As a broadening of MRP system, Manufacturing Resource Planning (MRP I